Karl-Ove is a Swedish man who works at the fish market.
Throughout The Series
In the Season Three episode, The Swedes, Karl-Ove is apprehended by Rosa Diaz and Jake Peralta who were tipped off that he was selling counterfeit caviar from a blue stall at the fish market.
He was in possession of a flawless 39-carat diamond that was stolen from the Royal Stockholm Museum 6 weeks before they arrested him.
In the Season Three episode The Swedes, Jake Peralta, Rosa Diaz go to the apartment of the perpetrator Karl-Ove.












